!84 



EFFECT OF IRRITATION OF A POLARIZED NERVE. 



The iiTitatioii being here to the side of the anode, it should, according 

 to Piiiiger, i)roduce a stronger contraction during the absence than dur- 

 ing the presence of the constant or polarizing current. The method of 

 experimenting adopted was that described some pages back. As there, 

 the first experiments were made with the closing of an electric circuit 

 as an irritant. 



Time. 



Number of ex- 

 periment. 



Irritation without 

 polarization. 



Irritation during 

 polarizatiou. 



86. 



1st irritations - 

 2cl irritations . . 

 3d irritations. . 

 4th irritations. 

 5th irritations. 



sr. 



1st irritations- . 

 2d irritations. .. 

 3d irritations. -. 

 4tli irritations. . 

 5th ivritiitious. . 

 6tli irrilations. . 

 7th irritations. . 

 8tli irritations. . 

 9th irritations. . 

 lOtli irritations, 

 lltli irritations. 

 ll!tli irritations. 

 13tli irritations. 



Irritation, 2 cells : 



SS. 



1st irritations. 

 2d irritations. . 

 3iliiTitaiions . 

 4th irritations . 



89. 



1st irritations 

 2d irritations. . 

 3d irritations. . 

 4tli irritations 

 .'Jth irritations 

 6th irritations. 

 7th irritations. 

 8th irritations . 



f>0. 



1st irritations 

 2d irritati<ins . 

 3d irritations . 



91. 



1st irritations 

 2d iiTitations . . 



93. 



1st irritations. 

 2(1 irritations. . 

 3d iiiitations. . 

 4tli irritations. 

 5tli irritations. 



Irritation, 1 cell, rheo- 

 chord : 



3703 cent 0. 5 



3703 cent 0.5 



2907 cent 0.5 



2G75cent 0. 



2781 cent 2. 



2781 cent 1.5 



1214 cent 0. 



1308 cent. 0. 



1308 cent 0. 



1308 cent 0. 



223 cent 0.5 



223 cent 0.5 



223 cent 0.5 



Irritation, 1 cell, rheo- 

 chord : 

 3109 cent. .....0. 



3109 cent 0. 



3109 cent 0. 



3109 cent 0. 



Irritation, 1 cell, rheo 

 chord : 



3109 cent 0.5 



3109 cent .... 0.5 



3109 cent 0.5 



.3109 cent 0.5 



3109 cent 0.5 



3109 tent 0.5 



3109 cent 0.5 



3109 cent 0.5 



Irritation, 1 coll : 



Irritation, 1 coll : 



Irritation, 1 cell: 



Eemarks. 



Polarization : 



4 cells 1. 



2 cells 0. 



0. 



0. 



0. 



Polarization, 2 cells : 



0. 



1. 



1. 



0.5 



0. 



2. 



3. 



3. 



3. 



3. 



3. 



3. 



3. 



Polarization, 2 cells: 



0.5 

 0.5 

 0.5 

 0.5 



Polarization, 2 cells: 



0.5 

 0.5 

 0.5 

 0.5 

 0.5 

 0.5 

 0.5 

 0.5 



Polarization, 2 cells : 

 3. 



0.5 

 0.5 



Polarization, 2 cells: 

 0. 

 0. 



Polarization, 2 cells: 

 0. 

 3. 

 3. 

 3. 

 0.5 



Kana temporaria. 



Rana temporaria. 



10 minutes later. 



Rana temporaria. 



Rana temporaria. 



Rana temporaria, 



Rana temporaria 



Rana temporaria. 



